James Whitmore
President of the Assembly
Roddy McDowall
Cornelius
Charlton Heston
George Taylor
Norman Burton
Hunt Leader
Kim Hunter
Zira
Wright King
Dr. Galen
Maurice Evans
Dr. Zaius
James Daly
Dr. Honorious
Linda Harrison
Nova
Robert Gunner
Landon
Lou Wagner
Lucius
Woodrow Parfrey
Dr. Maximus
Paul Lambert
Minister
Felix Silla
Child Gorilla (uncredited)
Joe Tornatore
Gorilla (uncredited)
Billy Curtis
Child Ape (uncredited)
Army Archerd
Gorilla (uncredited)
Buck Kartalian
Julius
David Chow
Chimpanzee (uncredited)
Jerry Maren
Child Ape (uncredited)
Frank Delfino
Child Ape (uncredited)
Cass Martin
Chimpanzee (uncredited)
Buddy Douglas
Child Ape (uncredited)
James Bacon
Ape (uncredited)
Smokey Roberds
Chimpanzee (uncredited)
William Graeff Jr.
Gorilla (uncredited)
Harry Monty
Child Ape (uncredited)
Eldon Burke
Gorilla (uncredited)
Lars Hensen
Gorilla (uncredited)
Priscilla Boyd
Human #1 (uncredited)
Dianne Stanley
Astronaut Stewart (uncredited)
John Quijada
Gorilla (uncredited)
Emory Souza
Child Ape (uncredited)
Martin Abrahams
Human in Cage (uncredited)
Erlynn Mary Botelho
Gorilla (uncredited)
Chuck Fisher
Gorilla (uncredited)
Irvin 'Zabo' Koszewski
Gorilla (uncredited)
Norma Jean Kron
Chimpanzee (uncredited)
Robert Lombardo
Gorilla Photographer (uncredited)
Stephan Merjanian
Gorilla (uncredited)
Dave Rodgers
Gorilla (uncredited)
Jane Ross
Human (uncredited)
George Sasaki
Chimpanzee (uncredited)